Paper-creping machine



2 Sheets-Sheet 1 Filed May 9, 1929 INVENTOR. 6M

ATTORNEY June 10, 1930. s. J. CAMPBELL 1,762,157

PAPER CREPINGQ MACHINE I Filed May 9, 1929 2. Sheets-Sheet 2 v 2322 BY ATTOR EYT 1 Patented June 10, 1930 I UNITED STATES SAMUEL J. CAMPBELL, OF GREEN BAY, WISCONSIN, ASSIG-NOR OF ONE-HALF TO'HUD-f SON-SHARP MACHINE COMPANY, OF GREEN WISCONSIN PATENT oFFioE PAPER-CREPING MACHINE Application filed May 9, 1929. Serial No. 361,661.

In the creping of paper, it is customary to provide feed rolls or equivalent feeding means which serve to advance the paper Web against the resistance afforded by the doctor plate or blade which serves to afford an obstructed advance to the paper web and thereby cause it to double back and forth on itself and thus assume the creped condition. It has also been customary in certain machines with which I am familiar to so locate the doctor plate that it will serve, in conjunction with one of the feeding rollers, to aflord a restricted channel through which the paper is forced and Within which the creping occurs.

The present invention relates to mechanism of this character, in which provislon is made for the adjustment of the creping plate with relation to the feed rolls, so that its angle with respect to the roller surfaces and the width of the channel may be varied to adapt the machine to the creping of paper of varying thicknesses and quality, and also to vary the character. of the crepingimparted t0 the paper.

Provision is also made for the utilization in the creping operation of yieldable plates or strips so arranged as to yield locally to accommodate variations in the thickness of the paper web and to maintain the proper amount of compression under varying conditions.

Further objects and details of the invention will appear from a description thereof, in conjunction with the accompanying drawings, wherein, 7 v

Figure 1 is a side elevation of those portions of a creping machine which embody the features of the present invention;

Fig.2 is a fragmentary detail in plan, showing the mechanisms employedfor adjusting the doctor plate;

Fig. 3 is a top or plan view of the doctor plate showing the utilization of sprlng pressed surface plates to afford localized yieldability and Fig. 4 is a View partly in sectlon and on an enlarged scale, taken on line 44 of Fig. 3.

The machine of the present invention comprises upper and lower feeding rolls 11 and 12 respectively, which are mounted shafts 13' by journal boxes 15 and 1 6, slidably mounted upon guide flanges 17 and 18 forming apart 1 of the end wall 19 of the frame of the machine. at each end of the machine, the description-of Since these features are duplicated BAY, WISCONSIN, A- 'CORPORA'IION OF 5 i Q the arrangement at one end will suflicefor both.

to a pivot pin 27. This arrangement affords a convenient means for imparting athrust against the upper roller. to maintain com-,

pressi-ve feeding contact with the lower roller. Suitable means of any approved character may be provided for positivelyfeeding the rollers, but it is not deemed necessary to illustrate the'feeding means.

The paper web is fed from a parent roll 28 over and under guide rolls 29 and 30 re} spectively, and between the bite of the main feeding rolls 15 and16. A doctor plate .31

its inner edge 32 is concavely ground to The upper journal box 15 is provided with is located between the bite of the rolls, and

afford a knife edge 33 which bears upon the lower roll and serves to divert the 'paperweb' 34 upwardly througha restricted space or channel between the concave edge of the doctor plate and the upper roll, which spaceconstitutes the creping channel and serves to a'f- I it ford sufiicient restriction to cause the paper Web to beretarded and to fold back and forth on itself when subjected tothe feeding th'rust from behind, so that the paper is properly creped. I

The doctor plate may be of solid or integral form as shown in Figure 1, although it is preferred to provide the yielding features shown in detail in Figs. 3 and 4. The doctor plate has mounted thereon a group or series of yieldable creping plates 35, each of which is concavely ground on its edge 36, and'when in normal position the group of creping plates present their edges in alinement, and the edges thus presented constitute an unbroken continuation' of the channel afforded by the curved edge of the doctor plate in conjunction f with the feeding roll 15.

' ufacture of paper.

The creping plates fit closely to ether but are slidably mounted and indivi ually adjusted to accommodate variations in the thickness of the paperweb, which variations are incidental and unavoidable in the man- Each of the creping plates is provided with a slot 37 which receives a pin 38 entered through'the doctor plate, which arrangement permits the creping plates to individually yield against the tension of springs 39, one for each of the creping plates, each of the springs at the inner end being entered into a recess or cavity 40 in the associated creping plate, and at the outer end into 'a recess or cavity 41 in a bar 42, which extends transversely of the machine and is held in place by means of screw bolts 43 entered through slots 44, which permits the bar 42 to be adjusted back and forth to the extent-required to impose a uniform degree of pressure upon all of the springs 39 comprised in the series.

This arrangement regulates the spring compression imposed upon the several creping plates composing the series, to accommodate the machine to various conditions, but makes provision for the individual yielding of each of the creping plates to accommodate localized variations in the thickness of the v paper web.

In order to regulate the bar 42, two cams 45 are mounted upon a shaft 46 journalled within lugs 47 upstanding from a supporting slide block: 48, so that, by loosening the b0 ts 43 and turning the shaft, the bar 42 may be adjusted. In order to facilitate rotation of the shaft 46, it is provided at its end with a squared head 49 adapted to receive a crank wrench or other tool ofany suitable descriptionf The slide block 48 supports'the fixed documn 51 which is rotatably mountedor journalled between the end walls 19 of the machine frame so' as to permit rotation, which will serve to vary the angularity of the slide block 48 and thus serve to adjust the doctor plate, and creping plates if the same are employd, with respect to the bite of the feed rolls. In order to impart the required degree of rotation to the column 51, the column is provided with outstanding lugs or ears 52, which are slotted at 53 to receive in each instance a bolt 54 provided with a'locking nut 55. In each instance, the locking bolt extends through a vertical slot 56 in the end of the wall of the frame, so that, by loosening the nut, the column may be rotated after which the nut is tightened to clamp the column in its adjusted position.

In order to aiford the necessary rotation, an adjusting screw 57 is provided at each end of the column which bears against the lower edge of the proximate In 52, so that by turning the set screws the a justment of the column may be effected. 'Ilhe colunm at each end has outstanding therefrom a swivelly mounted block 58 which projects outwardly from an aperture 59 in the proximate end wall of the frame, and each of the swivel blocks has entered therethrough an adjusting screw 60 which is in each instance journalled through a lug 61 outstanding from the end wall of the frame.

Each of the screws 60, at its u er end, is provided with a bevel pinion 62 which, in each instance, meshes with a bevel pinion-63 mounted ona horizontal shaft 64, which at one end carries a hand wheel 65 provided with a handle 66. The shaft 64 is suitably journalled through the end walls of the machine, so that, by rotating the shaft, the two bevel pinions will be rotated in unison, thereby raising and lowering the opposite ends of the column to regulate the vertical adjustment of the latter to the desired degree.

The slide block 48may be individuall adjusted by the provision of a pair of a justing screws 67 which are entered through channel heads 68 carriedby bracket arms 69 outstanding from the column. Each adjusting screw 67 has mounted on its outer end a bevel pinion 70, which bevel pinions mesh with corresponding bevel pinions 71 carried by a shaft 72 having mounted thereon a hand wheel 73 provided with a handle 74, so that by rotating the hand wheel the shaft 72 will be rotated and the two sets of bevel pinions will be operated in unison, which serves to advance or retract the slide block independently of the angularity or vertical adjustment of the column by the adjusting means previously described.

Operation In operation, the position of the doctor plate, with or without the yielding creping plate features, will be adjusted in such a way as to bring the doctor plate into the desired relation to the feed rolls. By adjusting the slide block toward or from the biting point of the rolls, the knife edge of the doctor plate may be caused to im inge against the 1 lower roll at any desiredv istance from the biting line of the rolls.

- Further adjustment of the angularity at which the knife edge of-the doctor plate is presented may be effected by tilting the column 51 more or less by means of the set screws 57, which also has the effect of adjusting the a capacity to yield locally as occasion may reing in unison upon all of said springs for creping channel may be provided for.

relation between the concave edge of the doctor plate and the opposed roller, so that a proper convergence of the walls of tlIie n like manner, the means provided for vertical adjustment permitstill more accurate adjustments to be obtained, so'that, by the. conjoint use ofthe various adjustable mechanisms, the width and character of the crepping space may be adjusted with precision to meet the requirements of the situation. Wherethe creping plates are employed, the spring tension exerted upon the entire group of plates will be adjusted to the desired degree. The springs serve to maintain the entire group of plates normally projected forwardly toward the upper feeding roll, with their inner bevelled or concaved edges 36in alinement with one another and in continuation of the curvature of the doctor thickness of the paper, so that in all cases a proper compression will be afforded with the uire.

Although the invention has been described with considerable particularity as to detail, it is not the intention, unless otherwise indicated, to limit the arrangement to that shown and described, since variations in theprinciple may be introduced without departing from the spirit of the invention.

I claim:

1. In a paper creping machine, the combination of feeding means. for a paper web, a doctor plate associated with said feeding means, creping plates slidably and individually mounted upon the doctor plate and adapted to be individually retracted under pressure to accommodate localized variations in the thickness of the paper web, and a member standing in opposed relation to the doctor plate and creping plates, and adapted in conjunction therewith to furnish a channel for the restricted feeding of the paper web.

2. In a paper creping machine, the combination of feeding means for a paper web, a doctor plate associatetdwith said feeding means, creping plates slidably and individually mounted upon the doctor plate and adapted to be individually retracted under pressure to accommodate localized variations in the thickness of the paper web, a spring for each of said creping plates for resisting such retraction, and a member standing in opposed relation to the doctor plate and creping plates, and adapted in conjunction therewith to furnish a channel for the restricted feeding of the paper web.

3. In a paper creping machine, the combi-' nation of. feeding means for a paper web, a

doctor plate associated with said feeding means, creping plates slidably and individually mounted upon the doctor plate and adapted to be individually retracted under pressure to accommodate localized variations in the thickness of the paper web, a spring for each of said creping plates for resisting such retraction, a member standing in opposed relation to the doctor plate and creping plates, and adapted in conjunction therewith to furnish a channel for the restricted feeding of the paper web, and means for adjusting all of said springs simultaneously.

4. In a paper creping machine, the combination of feeding means for a paper Web, a doctor plate associated with said feeding means, creping plates slidably and individually mounted upon the doctor plate and adapted to be individually retracted under pressure to accommodatelocalized variations in the thickness of the paper web, a spring for each of said creping plates for resisting such retraction, a member standing in opposed relation to the.doctor plate and creping plates, and adapted in conjunction therewith to furnish a channel for the restricted feeding of the paper web, and means for actadjusting the compression exerted against the respective creping plates.

5. In a machine for creping'paper, the combination of a feed roller, a doctor plate having its acting edge beveled to afi'ord a knife edge for contact with said feed roller, a. plurality of creping plates, each slidably mounted upon the doctor plate and each having an acting edge beveled in continuation of the acting edge of the doctor plate, an adjustably mounted cross bar located inproximate, relation to the outer ends of the respective creping plates, and: a spring for each of said creping plates, interposed between the outer end thereof and the cross bar.

6. In a machine for creping paper, the

combination of a feed roller, a doctor plate having its acting edge beveled to afford a knife edge for contact with said feed roller, a plurality of creping plates, each slidably mounted upon the doctor plate and each havstricted channel for thecreping of the paper.

7. In a machine for creping paper, the combination of a feed roller, a doctor plate having its acting edge beveled to afford a knife edge for contact with said feed roller,

a plurality of creping plates, each slidably mounted upon the doctor plate and each having an acting edge beveled in continuation of the acting edge of the doctor plate, an ad justably mounted cross bar located in proximate relation to the outer ends of the respective creping plates, a spring for each of tion therewith a restricted channel for the feeding of the paper web.

8. In a machine for creping paper, the combination of a feed roller, a doctor plate having its acting edge beveled to afford a knife edge for contact with said feed roller,

a plurality of creping plates, each slidably mounted upon the doctor plate and each having an acting edge beveled in continuation of the acting edge of the doctor plate, an adjustably mounted cross bar located in proximate relation to the outer ends of the respective creping plates, a spring for each of said creping plates, interposed between the outer end thereof and the cross bar, and

' means-for adjusting the position of the cross bar to simultaneously vary the compression exertedby the groupof.springs, a member standing in op osed relation to the edges.

of the doctor p ate and creping plates, and affording in conjunction therewith a restricted channel for the creping of the paper, and an adjustable mounting for the doctor plate for varying the position of the doctor plate and creping plates with respect to the feed roller.

9. In a-machine for creping paper, the combination of a feed roller, a doctor plate having its acting edge beveled to afiord a knife edge for contact with said feed roller, a plurality ofcreping plates, each slidably mounted upon the doctor plate and each having an'acting edge beveled in continuation of the acting edge 'of the doctor plate, an ad-- plate and creping plates, and affording in conjunctiontherewith a restricted channel for the creping of paper, a slide block upon which the doctor plate is mounted, an adfor adjusting the mounting, and means for adjusting the slide block.

10..In a machine for creping paper, the

combination of feeding elements, a doctor plate in associated relation with said feeding elements, a slide block upon which said dottor plate is mounted, a rotatably mounted mounting for said slide block, a set screw for imparting rotation to said mounting, a pair of feed screws journalled upon said rotatably mounted mounting and threading into said slide block, each of said screws carrying a bevel gear; and a shaft and gear elements carried thereby and meshing with the first mentioned bevel gears for simultaneously adjusting both ends of the slide block.

11. In a machine. for creping paper, the combination of feeding elements, a doctor plate in associated relation with said feeding elements, a slide block upon which said doctor blocks swivelly secured to the ends of the i rotatably mounted mounting in coincidence with the axis thereof, a screw entered through each of said adjusting blocks, a fixed journal for each of said screws, a bevel gear car,-

ried by each of said screws, a shaft provided with bevel gears mounted thereon, and means for rotating said in unison.

In witness that I claim the foregoing I have hereunto subscribed my name this 30th day of April, 1929.

' SAMUEL J. CAMPBELL.

shaft. to adjust said screws 

